BE416678A - - Google Patents
Info
- Publication number
- BE416678A BE416678A BE416678DA BE416678A BE 416678 A BE416678 A BE 416678A BE 416678D A BE416678D A BE 416678DA BE 416678 A BE416678 A BE 416678A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
- H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR47525T | 1936-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE416678A true BE416678A (en:Method) |
Family
ID=8683000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE416678D BE416678A (en:Method) | 1936-07-22 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE416678A (en:Method) |
| FR (2) | FR793466A (en:Method) |
-
0
- BE BE416678D patent/BE416678A/xx unknown
-
1935
- 1935-07-27 FR FR793466D patent/FR793466A/fr not_active Expired
-
1936
- 1936-07-22 FR FR47525D patent/FR47525E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR793466A (fr) | 1936-01-25 |
| FR47525E (fr) | 1937-05-24 |